docs: def set_pattern_actual_step(self, patternnumber, value):
          """Set the 'actual step' parameter for a given pattern.
  
          Args:
              * patternnumber (integer): 0-7
              * value (integer): 0-7
          """
          _checkPatternNumber(patternnumber)
          _checkStepNumber(value)
          
          address = _calculateRegisterAddress('actualstep', patternnumber)
          self.write_register(address, value, 0)